
I had a similar experience when I tried the Nokian WXC300 tires this past winter, I was riding ice covered uphill and downhill trails, passing hikers that could barely stand on the trail surface. Had enough downhill braking grip to make the discs squeal. It was an experience that did make me seek out stretches of ice to ride. I still wore some body armour to take the edge of possible impacts but never had to use it.
The Nokians WXC300's use aluminium/carbide studs, so they weigh in about 680gms, lighter than my Nokian NBX2.3's.